oSIST prEN 1996-2:2022

Eurocode 6 - Design of masonry structures - Part 2: Design considerations, selection of materials and execution of masonry

(1) This document gives basic rules for the selection of materials and execution of masonry to enable it to comply with the design assumptions of the other parts of Eurocode 6.
(2) This document deals with ordinary aspects of masonry design and execution including:
-   selection of masonry materials;
-   factors affecting the performance and durability of masonry;
-   masonry detailing, joint finishes, movement joints, resistance of buildings to moisture penetration;
-   storage, preparation and use of materials on site;
-   execution of masonry;
-   masonry protection during execution;
(3) This document does not cover the following items:
-   aesthetic aspects;
-   applied finishes;
1.2   Assumptions
(1) The assumptions of EN 1990 apply to this document.
(2) This document is intended to be used together with EN 1990, EN 1991, EN 1996 1-1, EN 1996-1-2 and EN 1996-3.
(3) The design of masonry is carried out in accordance with EN 1996 1 1.

Eurocode 6 - Bemessung und Konstruktion von Mauerwerksbauten - Teil 2: Planung, Auswahl der Baustoffe und Ausführung von Mauerwerk

1.1   Anwendungsbereich von prEN 1996 2
(1) Dieses Dokument enthält Grundregeln für die Auswahl von Baustoffen und die Ausführung von Mauerwerk, die es ermöglichen, den der Bemessung und Konstruktion zugrundeliegenden Annahmen der anderen Teile des Eurocodes 6 zu entsprechen.
(2) Dieses Dokument behandelt die üblichen Aspekte der Planung sowie der Ausführung von Mauerwerk. Dazu gehören:
-   die Auswahl der Baustoffe;
-   die Faktoren, die die Eigenschaften und Dauerhaftigkeit des Mauerwerks beeinflussen;
-   die Mauerwerksausführungen, Fugenabschlüsse, Bewegungsfugen und der Widerstand der Bauwerke gegen das Eindringen von Feuchte;
-   die Lagerung, Vorbereitung und Verwendung von Baustoffen auf der Baustelle;
-   die Ausführung des Mauerwerks;
-   das Aushärtungs- und Schutzverfahren des Mauerwerks während der Ausführung.
(3) Dieses Dokument gilt nicht für:
-   ästhetische Aspekte;
-   Oberflächenbehandlungen.
1.2   Voraussetzungen
(1) Für dieses Dokument gelten die Voraussetzungen nach EN 1990.
(2) Dieses Dokument ist zur Anwendung in Verbindung mit EN 1990, EN 1991, EN 1996 1 1, EN 1996 1 2 und EN 1996 3 vorgesehen.
(3) Die Mauerwerksplanung erfolgt nach EN 1996 1 1.

Eurocode 6 - Calcul des ouvrages en maçonnerie - Partie 2: Conception, choix des matériaux et mise en oeuvre des maçonneries

1.1   Domaine d’application du prEN 1996 2
(1) Le présent document énonce les règles fondamentales pour le choix des matériaux et la mise en œuvre des maçonneries, afin que ces dernières soient conformes aux hypothèses de conception des autres parties de l’Eurocode 6.
(2) Le présent document traite des aspects ordinaires de la conception et de la construction de maçonneries, y compris :
-   le choix des matériaux de maçonnerie ;
-   les facteurs influençant les performances et la durabilité de la maçonnerie ;
-   Les dispositions constructives de la maçonnerie, la finition des joints, les joints de rupture, la résistance des ouvrages à la pénétration de l’humidité ;
-   le stockage, la préparation et l’utilisation des matériaux sur site ;
-   la construction des maçonneries ;
-   la protection des maçonneries au cours de la construction.
(3) Le présent document ne couvre pas les éléments suivants :
-   les aspects esthétiques ;
-   les finitions appliquées.
1.2   Hypothèses
(1) Les hypothèses de l'EN 1990 s'appliquent au présent document.
(2) Le présent document est conçu pour être utilisé conjointement avec l'EN 1990, l’EN 1991, l’EN 1996 1-1, l’EN 1996-1-2 et l’EN 1996-3.
(3) Le calcul des maçonneries est réalisé conformément à l’EN 1996 1 1.

Evrokod 6 - Projektiranje zidanih konstrukcij - 2. del: Projektiranje z upoštevanjem izbire materialov in izvedbe zidovja

General Information

• Status: Not Published
• Public Enquiry End Date: 18-Dec-2022
• ICS: 91.010.30 - Technical aspects
• ICS: 91.080.30 - Masonry
• Technical Committee: KON - Structures
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 23-Sep-2022
• Due Date: 10-Feb-2023
• Completion Date: 19-Dec-2022
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/515 - Mandate for amending existing Eurocodes and extending the scope of structural Eurocodes
• Ref Project: prEN 1996-2 - Eurocode 6 - Design of masonry structures - Part 2: Design considerations, selection of materials and execution

Relations

• Revised: SIST EN 1996-2:2006 - Eurocode 6 - Design of masonry structures - Part 2: Design considerations, selection of materials and execution of masonry
• Effective Date: 20-Feb-2019
• Revised: SIST EN 1996-2:2006 - Eurocode 6 - Design of masonry structures - Part 2: Design considerations, selection of materials and execution of masonry
• Effective Date: 18-Jan-2023
• Revised: SIST EN 1996-2:2006 - Eurocode 6 - Design of masonry structures - Part 2: Design considerations, selection of materials and execution of masonry
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 1996-2:2022
01-december-2022
Evrokod 6 - Projektiranje zidanih konstrukcij - 2. del: Projektiranje z upoštevanjem
izbire materialov in izvedbe zidovja
Eurocode 6 - Design of masonry structures - Part 2: Design considerations, selection of
materials and execution of masonry
Eurocode 6 - Bemessung und Konstruktion von Mauerwerksbauten - Teil 2: Planung,
Auswahl der Baustoffe und Ausführung von Mauerwerk
Eurocode 6 - Calcul des ouvrages en maçonnerie - Partie 2: Conception, choix des
matériaux et mise en oeuvre des maçonneries
Ta slovenski standard je istoveten z: prEN 1996-2
ICS:
91.010.30 Tehnični vidiki Technical aspects
91.080.30 Zidane konstrukcije Masonry
oSIST prEN 1996-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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DRAFT
EUROPEAN STANDARD
prEN 1996-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

September 2022
ICS 91.010.30; 91.080.30 Will supersede EN 1996-2:2006
English Version

Eurocode 6 - Design of masonry structures - Part 2: Design
considerations, selection of materials and execution of
masonry
Eurocode 6 - Calcul des ouvrages en maçonnerie - Eurocode 6 - Bemessung und Konstruktion von
Partie 2: Conception, choix des matériaux et mise en Mauerwerksbauten - Teil 2: Planung, Auswahl der
oeuvre des maçonneries Baustoffe und Ausführung von Mauerwerk
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 250.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1996-2:2022 E
worldwide for CEN national Members.

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Contents Page
European foreword . 4
0 Introduction . 5
1 Scope . 7
1.1 Scope of prEN 1996-2 . 7
1.2 Assumptions . 7
2 Normative references . 7
3 Terms, definitions and symbols . 8
3.1 Terms and definitions . 8
3.1.1 Terms relating to the communication of the design of masonry . 8
3.1.2 Terms relating to climatic factors and exposure conditions . 8
3.1.3 Other Terms . 8
3.2 Symbols . 9
4 Design considerations . 9
4.1 Factors affecting the durability of masonry . 9
4.1.1 General . 9
4.1.2 Classification of environmental conditions . 9
4.1.3 Aggressive chemical environments . 10
4.2 Selection of materials . 10
4.2.1 General . 10
4.2.2 Masonry units . 11
4.2.3 Masonry mortar and concrete infill . 11
4.2.4 Ancillary components and reinforcement . 12
4.3 Masonry . 12
4.3.1 Detailing . 12
4.3.2 Joint finishes . 12
4.3.3 Masonry movement . 13
4.3.4 Movement joints . 13
4.3.5 Permissible deviations . 15
4.3.6 Resistance to moisture penetration through external walls . 15
5 Execution . 16
5.1 General . 16
5.2 Acceptance, handling and storage of materials . 16
5.2.1 General . 16
5.2.2 Reinforcement and prestressing materials . 16
5.3 Preparation of materials . 16
5.3.1 Site-made mortars and concrete infill . 16
5.3.2 Factory made masonry mortars, pre-batched masonry mortars, pre-mixed lime sand
masonry mortars and ready mixed concrete infill . 18
5.4 Permissible deviations . 18
5.5 Execution of masonry . 21
5.5.1 Adhesion . 21
5.5.2 Laying masonry units . 21
5.5.3 Pointing and jointing for masonry other than thin layer masonry . 21
5.5.4 Incorporation of damp proof course membranes . 21
5.5.5 Movement joints . 22
5.5.6 Incorporation of thermal insulation materials . 22
5.5.7 Cleaning facing masonry. 22
5.6 Curing and protective procedures during execution . 22
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5.6.1 General . 22
5.6.2 Protection against rain . 22
5.6.3 Protection against freeze/thaw cycling . 22
5.6.4 Protection against effects of low humidity . 22
5.6.5 Protection against mechanical damage . 23
5.6.6 Construction height of masonry . 23
Annex A (informative) Classification of micro conditions of exposure of completed masonry . 24
A.1 Use of this Informative Annex . 24
A.2 Scope and field of application . 24
A.3 Classification . 25
A.4 Exposure to wetting . 26
Annex B (informative) Acceptable specifications of masonry units and mortar for durable
masonry in various exposure conditions . 28
B.1 Use of this Informative Annex . 28
B.2 Scope and field of application . 28
B.3 Selection of masonry units and mortar . 28
Annex C (informative) Selection of material and corrosion protection specifications for
ancillary components according to exposure class . 31
C.1 Use of this Informative Annex . 31
C.2 Scope and field of application . 31
C.3 Exposure classes . 31
C.4 Selection of materials . 31
Bibliography . 35

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European foreword
This document (prEN 1996-2:2022) has been prepared by Technical Committee CEN/TC 250 “Structural
Eurocodes”, the secretariat of which is held by BSI. CEN/TC 250 is responsible for all Structural
Eurocodes and has been assigned responsibility for structural and geotechnical design matters by CEN.
This document is currently submitted to CEN Enquiry.
This document will supersede EN 1996-2:2006.
The first generation of EN Eurocodes was published between 2002 and 2007. This document forms part
of the second generation of the Eurocodes, which have been prepared under a Mandate M/515 given to
CEN by the European Commission and the European Free Trade Association.
The Eurocodes have been drafted to be used in conjunction with relevant execution, material, product
and test standards, and to identify requirements for execution, materials, products and testing that are
relied upon by the Eurocodes.
The Eurocodes recognize the responsibility of each Member State and have safeguarded their right to
determine values related to regulatory safety matters at national level through the use of National
Annexes.
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0 Introduction
0.1 Introduction to the Eurocodes
The Structural Eurocodes comprise the following standards generally consisting of a number of Parts:
— EN 1990 Eurocode: Basis of structural and geotechnical design
— EN 1991 Eurocode 1: Actions on structures
— EN 1992 Eurocode 2: Design of concrete structures
— EN 1993 Eurocode 3: Design of steel structures
— EN 1994 Eurocode 4: Design of composite steel and concrete structures
— EN 1995 Eurocode 5: Design of timber structures
— EN 1996 Eurocode 6: Design of masonry structures
— EN 1997 Eurocode 7: Geotechnical design
— EN 1998 Eurocode 8: Design of structures for earthquake resistance
— EN 1999 Eurocode 9: Design of aluminium structures
— New parts are under development, e.g. Eurocode for design of structural glass
The Eurocodes are intended for use by designers, clients, manufacturers, constructors, relevant
authorities (in exercising their duties in accordance with national or international regulations),
educators, soft-ware developers, and committees drafting standards for related product, testing and
execution standards.
NOTE Some aspects of design are most appropriately specified by relevant authorities or, where not specified,
can be agreed on a project-specific basis between relevant parties such as designers and clients. The Eurocodes
identify such aspects making explicit reference to relevant authorities and relevant parties.
0.2 Introduction to EN 1996 (all parts)
EN 1996 (all parts) apply to the design of building and civil engineering works, or parts thereof, in
unreinforced, reinforced, prestressed and confined masonry.
EN 1996 (all parts) deal only with the requirements for resistance, serviceability and durability of
structures. Other requirements, for example, concerning thermal or sound insulation, are not considered.
EN 1996 (all parts) do not cover the special requirements of seismic design. Provisions related to such
requirements are given in EN 1998, which complements, and is consistent with EN 1996.
EN 1996 (all parts) do not cover numerical values of the actions on building and civil engineering works
to be taken into account in the design. They are provided in EN 1991 (all parts).
0.3 Introduction to prEN 1996-2
This document describes the rules for design considerations, selection of materials and execution of
masonry structures.
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0.4 Verbal forms used in the Eurocodes
The verb “shall" expresses a requirement strictly to be followed and from which no deviation is permitted
in order to comply with the Eurocodes.
The verb “should” expresses a highly recommended choice or course of action. Subject to national
regulation and/or any relevant contractual provisions, alternative approaches could be used/adopted
where technically justified.
The verb “may" expresses a course of action permissible within the limits of the Eurocodes.
The verb “can" expresses possibility and capability; it is used for statements of fact and clarification of
concepts.
0.5 National annex for prEN 1996-2
National choice is allowed in this standard where explicitly stated within notes. National choice includes
the selection of values for Nationally Determined Parameters (NDPs).
The national standard implementing this document can have a National Annex containing all national
choices to be used for the design of buildings and civil engineering works to be constructed in the relevant
country.
When no national choice is given, the default choice given in this standard is to be used.
When no national choice is made and no default is given in this standard, the choice can be specified by a
relevant authority or, where not specified, agreed for a specific project by appropriate parties.
National choice is allowed in prEN 1996-2 through a note to the following clause:
4.3.4.2 (7)
National choice is allowed in prEN 1996-2 on the application of the following informative annexes
Annex A Annex B Annex C
The National Annex can contain, directly or by reference, non-contradictory complementary information
for ease of implementation, provided it does not alter any provisions of the Eurocodes.
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1 Scope
1.1 Scope of prEN 1996-2
(1) This document gives basic rules for the selection of materials and execution of masonry to enable it
to comply with the design assumptions of the other parts of Eurocode 6.
(2) This document deals with ordinary aspects of masonry design and execution including:
— selection of masonry materials;
— factors affecting the performance and durability of masonry;
— masonry detailing, joint finishes, movement joints, resistance of buildings to moisture penetration;
— storage, preparation and use of materials on site;
— execution of masonry;
— masonry protection during execution;
(3) This document does not cover the following items:
— aesthetic aspects;
— applied finishes;
1.2 Assumptions
(1) The assumptions of EN 1990 apply to this document.
(2) This document is intended to be used together with EN 1990, EN 1991, EN 1996-1-1, EN 1996-1-2
and EN 1996-3.
(3) The design of masonry is carried out in accordance with EN 1996-1-1.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE See the Bibliography for a list of other documents cited that are not normative references, including
those referenced as recommendations (i.e. in ‘should’ clauses), permissions (‘may’ clauses), possibilities ('can'
clauses), and in notes.
EN 206, Concrete — Specification, performance, production and conformity
EN 771-1, Specification for masonry units — Part 1: Clay masonry units
EN 771-2, Specification for masonry units — Part 2: Calcium silicate masonry units
EN 771-3, Specification for masonry units — Part 3: Aggregate concrete masonry units (Dense and
lightweight aggregates)
EN 771-4, Specification for masonry units — Part 4: Autoclaved aerated concrete masonry units
EN 771-5, Specification for masonry units — Part 5: Manufactured stone masonry units
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EN 771-6, Specification for masonry units — Part 6: Natural stone masonry units
EN 998-2, Specification for mortar for masonry — Part 2: Masonry mortar
EN 1015-11, Methods of test for mortar for masonry — Part 11: Determination of flexural and compressive
strength of hardened mortar
EN 1015-17, Methods of test for mortar for masonry — Part 17: Determination of water-soluble chloride
content of fresh mortars
EN 1990, Basis of structural and geotechnical design
EN 1996-1-1, Eurocode 6 — Design of masonry structures — Part 1-1: General rules for reinforced and
unreinforced masonry structures
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1990, EN 1996-1-1 and the
following apply.
3.1.1 Terms relating to the communication of the design of masonry
3.1.1.1
design specification
documents describing the designer's requirements for the construction, including drawings, schedules,
test reports, references to parts of other documents and written instructions
3.1.2 Terms relating to climatic factors and exposure conditions
3.1.2.1
macro conditions
climatic factors depending on the general climate of the region in which a structure is built, modified by
the effects of local topography and/or other aspects of the site
3.1.2.2
micro conditions
localized climatic and environmental factors depending on the position of a masonry element within the
overall structure and taking into account the effect of protection, or lack of protection, by constructional
details or finishes
3.1.3 Other Terms
3.1.3.1
applied finish
covering of material bonded to the surface of the masonry
3.1.3.2
cavity width
distance perpendicular to the plane of the wall between the cavity faces of the masonry leaves of a cavity
wall or that between the cavity face of a veneer wall and the masonry backing structure
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3.1.3.3
cladding
covering of material(s) fastened or anchored in front of the masonry and not in general bonded to it
3.2 Symbols
For the purposes of this document, the material-independent symbols given in EN 1990, the material-
dependent symbols given in EN 1996-1-1 and the following material-dependent symbols apply.
Latin lower case letters
d minimum depth for pointing;
p
l maximum horizontal distance between vertical movement joints in external non-loadbearing
m
walls.
4 Design considerations
4.1 Factors affecting the durability of masonry
4.1.1 General
(1) Masonry shall be designed to have the performance required for its intended use.
4.1.2 Classification of environmental conditions
4.1.2.1 Micro conditions of exposure
(1) The micro conditions to which the masonry is expected to be exposed shall be taken into account in
the design.
(2) When deciding the micro conditions of exposure of the masonry, the effect of applied finishes,
protective claddings and details should be taken into account.
(3) Micro conditions of exposure of completed masonry should be categorized into classes, as follows:
— MX1 - In a dry environment;
— MX2 - Exposed to moisture or wetting;
— MX3 - Exposed to moisture or wetting plus freeze/thaw cycling;
— MX4 - Exposed to saturated salt air, seawater or de-icing salts;
— MX5 - In an aggressive chemical environment.
NOTE 1 For a structure more than one exposure class can apply.
NOTE 2 When necessary, more closely defined conditions within these classes can be specified using the sub-
classes in Annex A (e.g. MX2.1 or MX2.2 and M X 3.1 or M X 3.2).
(4) To produce masonry that meets specified performance criteria and withstands the environmental
conditions to which it is exposed, the determination of the exposure class should take into account:
— climatic factors;
— severity of exposure to moisture or wetting;
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— exposure to freeze/thaw cycling;
— presence of chemical materials that may lead to damaging reactions.
4.1.2.2 Climatic factors (macro conditions of exposure)
(1) The effect of the macro conditions on the micro conditions shall be taken into account when
determining the wetting of masonry and its exposure to freeze/thaw cycling.
(2) Concerning the macro conditions, the following should be taken into account:
— rain and snow;
— combination of wind and rain;
— temperature variation;
— relative humidity variation.
NOTE It is acknowledged that climates (macro conditions) vary considerably throughout Europe and that
certain aspects of climate can influence the risk of exposure of masonry to wetting and/or freeze/thaw cycling.
However, it is the classification of the micro conditions that is relevant for determining the durability of masonry
rather than the ranking of the macro conditions. Examples of relative exposure to wetting of masonry elements in
a typical building are shown in Annex A.
4.1.3 Aggressive chemical environments
(1) In coastal areas, the exposure of masonry to airborne chlorides or seawater should be taken into
account.
(2) Possible sources of sulphates include the following:
— natural soils;
— groundwater;
— waste deposits and filled ground;
— construction materials;
— airborne pollutants.
(3) Where the presence of aggressive chemicals in the environment, other than airborne chlorides or
seawater, can affect masonry, class MX5 should be assumed. Where salts can be transported by water
moving through the masonry, the potential for increased concentrations and quantities of available
chemicals should be taken into account.
4.2 Selection of materials
4.2.1 General
(1) Materials, where incorporated in the works, shall be able to resist the actions to which they are
expected to be exposed, including environmental actions.
(2) Only materials, products, and systems with established suitability shall be used.
NOTE Acceptable masonry unit specifications and mortar can be selected from Annex B, Table B.1 and B.2, in
relation to durability.
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4.2.2 Masonry units
(1) The requirements for masonry units shall be specified in accordance with the relevant product
standard:
— EN 771-1 for clay masonry units;
— EN 771-2 for calcium silicate masonry units;
— EN 771-3 for aggregate concrete masonry units;
— EN 771-4 for autoclaved aerated concrete masonry units;
— EN 771-5 for manufactured stone masonry units;
— EN 771-6 for natural stone masonry units.
(2) For reclaimed products, the design specification should state the required product performance
characteristics and the means of their verification including the requirements for sampling and frequency
of testing.
(3) Flatness and parallelism of the bed faces should be taken into account when applicable.
(4) Where masonry units are to be used with thin layer mortar the tolerance specification for the masonry
units should be at least as follows for:
— clay masonry units: T1+ or T2+ and R1+ or R2+;
— calcium silicate masonry units: T2 or T3;
— aggregate concrete masonry units: D3 or D4;
— autoclaved aerated concrete masonry units: TLMA or TLMB;
— manufactured stone masonry units: Dm (+/- 1 mm);
— natural stone masonry units: D3.
(5) When TLMA is specified, the thin layer mortar should accommodate joint thicknesses up to 3 mm.
4.2.3 Masonry mortar and concrete infill
4.2.3.1 General
(1) Masonry mortar should be selected according to the exposure condition of the masonry, the
specificat
...